An investigator wants to compare the mean ages between mothers who have and do not have a history of substance abuse. Histograms for the two groups are given below. Based on these figures, would it be reasonable to perform a two-sample t-test with equal variances? Why or why not?

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The Answer of An investigator wants to compare the mean ages between mothers who have and do not have a history of substance abuse. Histograms for the two groups are given below. Based on these figures, would it be reasonable to perform a two-sample t-test with equal variances? Why or why not?

An Investigator Wants to Compare the Mean Ages Between Mothers